Annual report pursuant to Section 13 and 15(d)

Benefit Plans - Weighted Average Assumptions for Pension Obligation (Details)

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Benefit Plans - Weighted Average Assumptions for Pension Obligation (Details)
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Defined Benefit Pension Plans | United States    
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation    
Discount rate 3.32% 4.32%
Rate of compensation increase 3.00% 3.00%
Defined Benefit Pension Plans | Foreign    
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation    
Discount rate 2.18% 3.01%
Rate of compensation increase 2.35% 2.44%
Supplemental Retirement Plans    
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation    
Discount rate 3.10% 4.20%
Other Postretirement Benefits Plans    
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation    
Discount rate 3.06% 4.09%
Immediate trend rate 5.91% 6.59%
Ultimate trend rate 4.39% 4.50%
Year that the rate reaches ultimate trend rate 2038 2035